EP 3842680 A4 20220427 - THREADED JOINT FOR STEEL PIPES
Title (en)
THREADED JOINT FOR STEEL PIPES
Title (de)
SCHRAUBVERBINDUNG FÜR STAHLROHRE
Title (fr)
RACCORD FILETÉ POUR TUYAUX EN ACIER
Publication
Application
Priority
- JP 2018157837 A 20180824
- JP 2019030172 W 20190801
Abstract (en)
[origin: EP3842680A1] A disclosed threaded connection for steel pipes includes a pin (10) and a box (20). The pin (10) includes, in order from a front end of the pin (10) toward a pipe body (11) of the pin (10), an annular shoulder surface (12), an annular sealing surface (13) located adjacent to the shoulder surface (12), and a male thread part (14). The box (20) includes, in order from a pipe body (21) of the box (20) toward a front end of the box (20), an annular shoulder surface (22), an annular sealing surface (23) located adjacent to the shoulder surface (22), and a female thread part (24). The pin shoulder surface (12) and the box shoulder surface (22) incline from a plane perpendicular to a pipe axis (CL) in a direction of screwing the pin (10). A diameter (Dpi) of an inner circumferential edge (12a) of the pin shoulder surface (12) is smaller than a diameter (Dbi) of an inner circumferential edge (22a) of the box shoulder surface (22).
IPC 8 full level
F16L 15/04 (2006.01)
CPC (source: EP RU US)
E21B 17/042 (2013.01 - EP US); F16L 15/001 (2013.01 - US); F16L 15/004 (2013.01 - EP); F16L 15/04 (2013.01 - RU)
Citation (search report)
- [XI] WO 2011060894 A2 20110526 - VALLOUREC MANNESMANN OIL & GAS [FR], et al
- [XI] WO 2017097700 A2 20170615 - VALLOUREC OIL & GAS FRANCE [FR], et al
- [XI] US 4244607 A 19810113 - BLOSE THOMAS L
- [XI] WO 2007017082 A1 20070215 - VALLOUREC MANNESMANN OIL & GAS [FR], et al
- See also references of WO 2020039875A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3842680 A1 20210630; EP 3842680 A4 20220427; AR 116341 A1 20210428; BR 112020024954 A2 20210309; CA 3109443 A1 20200227; CA 3109443 C 20230627; CN 112585389 A 20210330; JP 7065977 B2 20220512; JP WO2020039875 A1 20210610; MX 2020013350 A 20210309; RU 2762926 C1 20211223; US 11774014 B2 20231003; US 2021164593 A1 20210603; WO 2020039875 A1 20200227
DOCDB simple family (application)
EP 19851508 A 20190801; AR P190102379 A 20190821; BR 112020024954 A 20190801; CA 3109443 A 20190801; CN 201980054771 A 20190801; JP 2019030172 W 20190801; JP 2020538269 A 20190801; MX 2020013350 A 20190801; RU 2020141433 A 20190801; US 201917056811 A 20190801